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26f8453288
Use u64 instead of uint64_t to make the KVM selftests code more concise and more similar to the kernel (since selftests are primarily developed by kernel developers). This commit was generated with the following command: git ls-files tools/testing/selftests/kvm | xargs sed -i 's/uint64_t/u64/g' Then by manually adjusting whitespace to make checkpatch.pl happy. Include <linux/types.h> in include/kvm_util_types.h, iinclude/test_util.h, and include/x86/pmu.h to pick up the tools-defined u64. Arguably, all headers (especially kvm_util_types.h) should have already been including stdint.h to get uint64_t from the libc headers, but the missing dependency only rears its head once KVM uses u64 instead of uint64_t. No functional change intended. Signed-off-by: David Matlack <dmatlack@google.com> [sean: rename pread_uint64() => pread_u64, expand on types.h include] Link: https://patch.msgid.link/20260420212004.3938325-5-seanjc@google.com Signed-off-by: Sean Christopherson <seanjc@google.com>
84 lines
1.7 KiB
C
84 lines
1.7 KiB
C
// SPDX-License-Identifier: GPL-2.0
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/*
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* RISC-V KVM ebreak test.
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*
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* Copyright 2024 Beijing ESWIN Computing Technology Co., Ltd.
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*
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*/
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#include "kvm_util.h"
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#include "ucall_common.h"
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#define LABEL_ADDRESS(v) ((u64)&(v))
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extern unsigned char sw_bp_1, sw_bp_2;
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static u64 sw_bp_addr;
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static void guest_code(void)
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{
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asm volatile(
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".option push\n"
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".option norvc\n"
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"sw_bp_1: ebreak\n"
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"sw_bp_2: ebreak\n"
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".option pop\n"
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);
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GUEST_ASSERT_EQ(READ_ONCE(sw_bp_addr), LABEL_ADDRESS(sw_bp_2));
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GUEST_DONE();
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}
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static void guest_breakpoint_handler(struct pt_regs *regs)
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{
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WRITE_ONCE(sw_bp_addr, regs->epc);
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regs->epc += 4;
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}
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int main(void)
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{
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struct kvm_vm *vm;
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struct kvm_vcpu *vcpu;
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u64 pc;
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struct kvm_guest_debug debug = {
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.control = KVM_GUESTDBG_ENABLE,
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};
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TEST_REQUIRE(kvm_has_cap(KVM_CAP_SET_GUEST_DEBUG));
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vm = vm_create_with_one_vcpu(&vcpu, guest_code);
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vm_init_vector_tables(vm);
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vcpu_init_vector_tables(vcpu);
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vm_install_exception_handler(vm, EXC_BREAKPOINT,
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guest_breakpoint_handler);
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/*
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* Enable the guest debug.
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* ebreak should exit to the VMM with KVM_EXIT_DEBUG reason.
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*/
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vcpu_guest_debug_set(vcpu, &debug);
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vcpu_run(vcpu);
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TEST_ASSERT_KVM_EXIT_REASON(vcpu, KVM_EXIT_DEBUG);
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pc = vcpu_get_reg(vcpu, RISCV_CORE_REG(regs.pc));
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TEST_ASSERT_EQ(pc, LABEL_ADDRESS(sw_bp_1));
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/* skip sw_bp_1 */
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vcpu_set_reg(vcpu, RISCV_CORE_REG(regs.pc), pc + 4);
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/*
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* Disable all debug controls.
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* Guest should handle the ebreak without exiting to the VMM.
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*/
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memset(&debug, 0, sizeof(debug));
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vcpu_guest_debug_set(vcpu, &debug);
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vcpu_run(vcpu);
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TEST_ASSERT_EQ(get_ucall(vcpu, NULL), UCALL_DONE);
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kvm_vm_free(vm);
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return 0;
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}
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